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Abstract

The pursuit for cheaper energy is leading the current wind tower design to increased heights. Common wind turbine tower designs would generate unjustified costs for transportation and erection leading to inefficient use of materials. In order to reduce these costs, several simplified erection methods have been proposed. One of such is the hybrid lattice-tubular steel tower. For economic feasibility, built-up cold-formed polygonal cross-sections have been proposed for the lattice part. This article presents a numerical investigation of the failure modes of closed polygonal cross-sections. The first part contains a presentation of structural systems which incorporate elements composed of plates and cold-formed members. The evaluation of the polygonal sections is done by means of finite element analysis considering local and global geometrical imperfections and residual stresses generated in the fabrication procedure. A comparative study is performed between several finite element models to propose a corresponding European buckling curve for calculating the flexural buckling resistance. The results show that the design of polygonal sections can be done according to European buckling curves methodology.

Keywords

Cold-formed finite element simulation flexural buckling lattice wind tower polygonal sections

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References

Abvabi

Rolfe

Hodgson

et al . (2015) The influence of residual stress on a roll forming process. International Journal of Mechanical Sciences, Elsevier 101–102: 124–136. Available at: http://dx.doi.org/10.1016/j.ijmecsci.2015.08.004

Beer

Schulz

(1970) Theoretical basis of the European buckling curves. Construction Métallique 1970(3): 37–57.

CEN (2005) EN 1993-1-1: Design of Steel Structures—Part 1-1: General Rules and Rules for Buildings. Eurocode 3. Brussels: European Committee for Standardization, CEN.

CEN (2007) EN 1993-1-5: Design of Steel Structures—Part 1-5: Plated Structural Elements. Brussels: European Committee for Standardization, CEN.

CEN (2011) EN 1090-2: Execution of Steel Structures and Aluminium Structures—Part 2: Technical Requirements for Steel Structures. Brussels: European Committee for Standardization, CEN.

Chan

T-M

Zhao

X-L

Young

(2015) Cross-section classification for cold-formed and built-up high strength carbon and stainless steel tubes under compression. Journal of Constructional Steel Research 106: 289–295.

Dubina

Ungureanu

(2014) Instability mode interaction: From Van Der Neut model to ECBL approach. Thin Walled Structures 81: 39–49. Available at: http://dx.doi.org/10.1016/j.tws.2013.10.014

Gonçalves

Camotim

(2014) The vibration behaviour of thin-walled regular polygonal tubes. Thin-walled Structures 84: 177–188. Available at: https://doi.org/10.1016/j.tws.2014.06.011

Hau

(2013) Wind Turbines: Fundamentals, Technologies, Application, Economics. Available at: http://www.explainthatstuff.com/windturbines.html

10.

Husemann

Meiners

(2013) U.S. Patent No. 8,474,212 B2. Washington, DC: U.S. Patent and Trademark Office.

11.

Jovašević

Correia

JAFO

Pavlović

et al . (2016) Global fatigue life modelling of steel half-pipes bolted connections. Procedia Engineering 160: 278–284. Available at: http://linkinghub.elsevier.com/retrieve/pii/S1877705816331393

12.

Kryger

Ryholl

(2013) U.S. Patent No. 8,590,276 B2. Washington, DC: U.S. Patent and Trademark Office.

13.

Chan

et al . (2016) Behavior of Q690 high-strength steel columns: Part 1: Experimental investigation. Journal of Constructional Steel Research 123: 18–30. Available at: http://dx.doi.org/10.1016/j.jcsr.2016.03.026

14.

Matos

Shah Mohammadi

Rebelo

(2017) A year-long monitoring of preloaded free-maintenance bolts—Estimation of preload loss on BobTail bolts. Renewable Energy 1(13). Available at: http://dx.doi.org/10.1016/j.renene.2017.05.092 (accessed 22 September 2017).

15.

Somodi

Kövesdi

(2017a) Flexural buckling resistance of cold-formed HSS hollow section members. Journal of Constructional Steel Research 128: 179–192. Available at: http://dx.doi.org/10.1016/j.jcsr.2016.08.014

16.

Somodi

Kövesdi

(2017b) Residual stress measurements on cold-formed HSS hollow section columns. Journal of Constructional Steel Research 128: 706–720. Available at: http://dx.doi.org/10.1016/j.jcsr.2016.10.008

17.

Tran

Veljkovic

Rebelo

et al . (2016a) Resistance of cold-formed high strength steel circular and polygonal sections—Part 2: Numerical investigations. Journal of Constructional Steel Research 125: 227–238.

18.

Tran

Veljkovic

Rebelo

et al . (2016b) Resistance of cold-formed high strength steel circular and polygonal sections—Part 1: Experimental investigations. Journal of Constructional Steel Research 120: 245–257.

19.

Wang

Chen

et al . (2014) Experimental and numerical study on the behavior of axially compressed high strength steel box-columns. Engineering Structures 58: 79–91. Available at: http://dx.doi.org/10.1016/j.engstruct.2013.10.013

20.

Zhou

Chen

Young

(2013) Cold-formed high strength stainless steel cross-sections in compression considering interaction effects of constituent plate elements. Journal of Constructional Steel Research 80: 32–41. Available at: https://dx.doi.org/10.1016/j.jcsr.2012.09.004

Stability analysis of newly developed polygonal cross-sections for lattice wind towers

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